Plaid Cymru and the Liberal Democrats will not contest the Vale of Glamorgan at the General Election, giving Labour a free run at unseating former Welsh Secretary Alun Cairns.
Plaid Cymru, Liberal Democrats and the Greens have agreed a pro-EU electoral pact in 11 of the 40 seats in Wales.
This includes stepping aside in the Vale of Glamorgan for the Greens – who only won 419 votes there last time.
Plaid Cymru won 2,295 and the Liberal Democrats 1,020. The Conservatives’ majority over Labour was 2,190.
As part of the deal, Plaid Cymru will get a free run in Arfon, Caerphilly, Carmarthen East, Dwyfor Meirionydd, Llanelli, Pontypridd, and Ynys Mon.
The Liberal Democrats alone will contest Brecon & Radnorshire, Cardiff Central, and Montgomeryshire.
“Plaid Cymru will be putting the Welsh national interest first and putting party politics aside to deliver as many MPs from pro-Remain parties as possible in this defining election,” Adam Price said.
Liberal Democrat leader Jo Swinson added: “I am delighted that we’ve been able to announce this arrangement to make sure we get as many pro-Remain MPs as possible. Our brighter future is built by working together so we can Unite to Remain.”